Home / 19,694.40-29,558.88-10,939.20

Finding the Fourth Proportional to 19,694.40, 29,558.88 and 10,939.20

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Solution

The fourth proportional to 19,694.40, 29,558.88 and 10,939.20 is: 16,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,694.40 : 29,558.88 = 10,939.20 : x
  2. Step 2: Convert to fraction form
    19,694.40/29,558.88 = 10,939.20/x
  3. Step 3: Cross multiply
    19,694.40x = 29,558.88 × 10,939.20
  4. Step 4: Simplify right side
    19,694.40x = 323,350,500.10
  5. Step 5: Solve for x
    x = 323,350,500.10/19,694.40
  6. Step 6: Final answer
    x = 16,418.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.